Type-writing machine.



H. K. HENRY. TYPE WRITING MACHINE.

APPLICATION FILED FEB. 4.1915.

Patented Jan. 22, 1918.

7 SHEETS-SHEET I.

H. K. HENRY.

TYPE WRITING MACHINE. APPLICATION FILED FEB. 4v 1915.

Patented Jan. 22, 1918.

FSHEETS-SHEET 2- H. K. HENRY.

TYPE WRITING MACHINE.

APPLICATION HLED FEB. 4. I915.

Patented Jan.22,1918.

7 SHEETS-SHEET 3.

H. K. HENRY.

TYPE WRITING MACHINE.

APPLICATION FILED FEB. 4. 1915.

Patented Jan. 22, 1918-.

7 SHEETSSHEET 4.

H. K. HENRY.

TYPE WRITING MACHINE.

APPLICATION FILED FEB. 4. 1915.

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TYPE WRITING MACHINE.

APPLICATION men FEB. 4. 1915.

Patented Jan. 22, 1918.

7 SHEETS-SHEET 6.

H. K. HENRY.

TYPE WRITING MACHINE.

APPLICATION FILED FEB. 4. I915.

HUBERT K. HENRY, OF CHICAGO, ILLINOIS, ASSIGNOR TO REX TYPEWRITJER COMPOF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

Specificationof Letters JPatent. Pmmnt gfl Jam 22, 1911 Applicationfiled February 4, 1915. Serial No. 6,127.

To all whom it may concern:

Be it known that l, HUBERT K. HENRY,

a citizen of the United States, and a resident section. Fig. 6 is ,japigverted' plan view.

tion.

of Chicago, county of Cook, and State of Illinois, have invented certainnew and useful Improvements in Type-Writing Machines, of whichthefollowing is a full, clear. andexact description.

The invention'relates to typewriting machines and seeks to provide animproved typewriter of simple, economical construc- A further object ofthe invention is to provide a typewriter construction which, for themost part, can be economically formed of sheet metal. The inventionconsists in the features of improvement hereinafter set forth,illustrated in the preferred form in the accompanying drawings and moreparticularly pointed out in the appended claims.

In the drawings, Figure 1 is a vertical,

' longitudinal section on line 1-1 of Fig. 5.

Fig. 2 is a detailed vertical section of parts shown in Fig. 1. Fig. 3is a view similar to Fig. 1, with the carriage and one of the type barsand key levers shown in shifted position and with certain parts omittedfor the sake of clearness. Fig. 4 is a detailed vertical section ofparts of the carriage-shift mechanism. Fig. 5 is a rear elevation of themachine with the back plate removed and a portion of the carriage bedshown in of the carriage mechanism with portions of the machine shown insection on the line 6-6 of Fig; 1. Figs. 7 and 8 are vertical. sectionsof the carriage mechanism taken respectively on lines 77 and 88 ofFig. 1. Figs. 9 and 10 are detailed sections on the lines 99 and 10-10respectively of Fig. 7. Fig. 11 is an end view of the platen with theplaten shaft shown in section on the line 1111 of Fig. 8. Figs. 12 and13are detailed cross-sections on the lines 1212 and 13-13 respectively ofFig. 1, and illustrating the type-bar mechanism, parts being omitted forthe sake of clearness. Fig. 14 is a detailed section. on an enlargedscale, of the bearing portion of one of the key levers. .Fig. 15 is aplan view of the carriage mechanism. Fig. 16 is a cross-section on theline 1616 of Fig. 15. Fig. 17 is a detailed view in front elevation ofthe typebar guide and ribbon shifter.

The frame of the machine comprises a pair of side plates 10, preferablyformed of sheet steel and having inclined frontportions, as most clearlyshown in Figs. 1 and 3. At the lower, front and rear portions of themachine the side plates 10 are connected by transverse bars or plates 11and 12, which are suitably secured at their ends to the side plates. Inthe form shown, the lower rear corners of the side plates and the endsof the transverse bar 12 are secured by screws to corner blocks 13. Thefront transverse connection 11 is preferably in the form of an angle barhaving an inturned flange 14 at its upper edge, and being provided atits ends with inturned lugs 15 that are fastened by screws, rivets orthe like to'the lower front end portions of the side plates.Intermediate the front and rear portions of the machine, but nearer therear thereof, the side plates 10 are connected by a transverse,vertically disposed type bar support or segment 16 which is preferablyformed of cast metal, and to the ends of which side plates are fastenedby screws 17 (see Figs. 5 and 13). The side plates are also connected atthe upper front portion of the machine by a transverse verticallydisposed plate 18 hav-' ing flanged end portions 19 that are fastened byscrews, rivets or the like'to the side plates (see Figs. 1 and 12). Thecentral portion of the transverse front plate 18 is depressed andcurved, as most clearly shown in Fig. 12, and is provided with aninturned flange 20. Preferably also a top form an opening through whichthe ty e bars are projected to strike the platen. e rear portion of themachineis preferably inclosed by a plate 22 having an inturned flange 23at its upper edge, and which is removably connected by screws or thelike to the lower corner blocks 13 and to the upper corner blocks 24,the latter being secured to the upper rear ortions of the side plates10. The parts of t e frame described, 1

ally mounted upon the upper front portion of-the transverse support orsegment 16, and normally extend forwardly therethrough in horizontalposition, with the type 26 at their forward ends engaging the segmentalrest or support 27 (see Figs. 1, 12 and 13). In the preferredconstruction shown the type-bar support 16 is provided at its upperfront curved portion with a forwardly projecting part or flange 28having a plurality of guide slots 29 formed therein, one for each of thetype bars. These slots are, of course, radial with respect to theprinting point of the machine and preferably the slots 29 are closelyadjacent at the center of the type bar segment and farther apart at theends thereof, as most clearly shown in Fig. 13. On its under side,'theprojecting flange or segment 28 is provided with a seat for a pivot rod30, which extends through the ends of all of the type bars. Pins 31projecting from the face of the support 16 extend beneath and engage theends of the pivot rod 30 and secure it in place.

The type bar rest 27 is formed of astrip of leather, felt or likecushioning material, the ends of which are connected by screws andwashers 32 and 33 to the under side of the top plate 21 (see Figs. 6 and12). The central portion of the leather strip is provided with 3.depending tab 34 which is connected by a screw 35 to the front plate 18.

Preferably, in order to maintain theleather strip of proper form, it isprovided with a stiffening or backing. This stiffening or backing ispreferably in the form of a segmental metal strip 36, which is securedto the flexible strip 27 by a number of rivets 37. The metal strip,however, is not directly connected in any way to the metal frame of themachine and the rest is of such a construction that it absorbs themomentum of the type bars as they return to normal position. andprevents them rebounding.

The key levers 38 are arranged in horizontal position beneath the typebars and the up-turned'forward ends thereof are provided with keys 39arranged in three banks, to form a keyboard of the universaltype. Thekey levers are mounted midway between their ends upon a series of threepivot rods 40, the key levers of each bank being mounted upon one of thepivot rods. The latter are supported at their ends in the side plates10, and, in the form shown, are in horizontalalinement above the keylevers. Each of the key levers is provided with an upwardly projectinglug 41 having a bearing sleeve 42 which encircles the correspondingpivot rod 40. The ends of the bearing sleeves abut (see Fig. 12) to holdthe type bars in proper spaced relation. The bearing sleeves arepreferably formed of, short pieces of sheet metal tubing which are upsetor crimped in suitable dies to form flanges 43 (see Fig. 14) whichsnugly engage the opposite faces of the lugs 41 and thereby securelyfasten the key levers to the bearing sleeves.

The forward portions of the key levers extend beneath the fronttransverse plate 18 and the rear ends of the key levers are arrangedbeneath and slightly in front of the rear pivot ends of the type barsand are connected thereto by a series of upwardly extending link 44. Theset of type bars are narrower than the set of key levers and the rearends of the outermost key levers are preferably bent inwardly to aslight extent, and the outermost links 44 are also inwardly offset, asshown in Fig. 13. The upper ends of the links are pivotally engaged withlugs 45 on the type bars 26. In the normal position of the type bars,the pivotal connection between the bars and links is below and in frontof the type bar pivot. The printing point of them-achine is verticallyabove the type bar pivot (see Fig. 3), and in striking position the typebar is vertically disposed with the pivot point between it and the linkabove and in front of the type bar pivot.

The type bars and key levers are adapted to return by gravity to normalposition, with the ends of the type bars in engagement with the rest 27,but preferably also light springs are employed which aid in returningthe parts of the type bar mechanism to normal position. In theconstruction shown, li ht springs 46 are coiled about the bearingsleeves 42 with one end of each spring in engagement with the lug 41 ofthe key lever. The other end of each spring is extended downwardly andengages a transverse angle bar 47 which extends between and is connectedat its ends to the side plates 10.

The type heads 26 carry three sets of type, and the platen and itssupporting ca 1'- riage shift vertically to bring any one set of typeinto operation. For this purpose the carriage is mounted upon avertically shifting frame, which comprises a transverse carriage bed ortrack 48 mounted upon the upper ends of a pair of uprights 49. The

uprights 49 are in the form of flat bars of sheet steel having T-heads50 at their upper ends, which extend from front to rear of the machineand are provided with inturned flanges 51. The carriage bed or track 48is secured to the rear portions of the flanges 51 on opposite sides ofthe machine and the forward ends of these flanges are extended upwardlyand then rearwardly to form supports 52 for the ribbon spools. Theuprights 49 are arranged adjacent the inner faces of the side plates 10and immediately in front of the type bar support 16, and their upperends are held between bearing pieces 53 fixed to the support 16 andguides 54. The latter are adjustably seof the shifting frame.

cured to the side plates 10 byscrews 55, which extend through slots inthe guide pieces, and the guide pieces are provided with inturned rearends which engage the forward edgesof the uprights 49 and hold theshifting frame against play in a fofeand-aft direction. A pair of guideshoes rock arms 58, which are securely fastened at their forward endsto'a transverse rock shaft 59, which is journaled in suitable bear ingsin side'plates 10; The rock arm 58 at the lefthandside of the machine isprovided with a forwardly extending arm 60, the upturned front end ofwhich is provided with a key 61. A short lever 62 having a key 63 at itsforward end is pivoted-to the front upturned end of the arm 60. Theshort lever 62, adjacent its rear pivoted end, is provided with adepending arm 64 and a spring 65 interposed between the arm 60 and thisarm normally holds the latter against an inturned stop 66 on the forwardend of the arm 60. The lever '62 and its arm 64 are arranged tocoeperate with a pair of stops to limit the vertlcal movement One ofthese stops is in the form of a screw 67 adjustably mounted in one endof the cross bar 11. The other stop 68 comprises a lug formed upon aplate 69 fastened to the inner face of the adjacent side plate 10.

The weight of the sifting frame and parts carried thereby normally holdit in its lowermost position, as shown in Figs. 1,5 and 7. In thisposition two stop pieces 70 fixed to the heads 50 of the'upr'ights 49,rest upon the upper edges of the side plates 10 (see Figs. 5 and 7),and, when the type bars are actuated the lower case type thereon will bebrought to the printing point. For writing caps, the finger key 63 isdepressed. The depression of this key first shifts the lever.62 aboutits pivot and into engagement with the lug 66 on the arm 60 so that thefurther depression of the key rocks the shaft 59 and the arms 58. andthus the shifting frame and carriage mechanism and the carriagesupported thereby. This shifting movement is limited by the engagementof an out-turned lug on the lower end of the arm 64 with the stop lug68, as shown in Fig. 4. For writing figs the key 61 is depressedas shownin Fig. 3. When this is done, the lug on the arm 64 clears the stop lug68 and the vertical movement of the carriage is not arrested until thelever 62 engages the stop screw 67. In this way the keys 61 and 63 shiftthe carriage to different heights for printing figs and ca-PS3,.

The weight of the shifting frame and parts carried thereby is partiallycounterbalanced by a pair of springs 71 (see Figs. 1 and 5) which areconnected at their upper ends to the upper portions of the support 16,and, at their lower ends, to the rear crossbar 57 of the rocking frame.A locking lever 72 (see Figs. 1 and 3) is pivotally mounted on one endof the front transverse bar or plate '18, and its lower end is nor mallyon one side of the arm or key lever 60. When the latter is depressed toits lowermost position as shown in Fig. 3, the locking lever 72 can beshifted to bring its lower end above the arm or key lever 60 and therebylopk the carriage and platen in the extreme shifted position. When thearm or key lever 60 is in the position shown in Fig. 4, to hold theplaten in position for writing caps, the locking lever 72 can beshifted, if desired, to bring a shoulder 73 on its lower end over theupper edge of the lever 60.

The carriage track or'bed 48, in the form shown, is formed of pressedsheet steel, and is provided at'its front and rear edges with -up-turnedinwardly inclined flanges 74.

The frame of'the carriage is also formed of pressed sheet steel andcomprises a transverse bar 75 having down-turned. inwardly inclinedflanges 76 at its front and rear edges and upturned end pieces 77 whichsupport the platen. The carriage fits within the bed or track 48 withits front and rear edges engagi the upper portion of the guide flanges 4and with the lower edges of the flanges 76 resting upon the horizontalpor tion of the bed or track. The carriage is propelled in letter-spacedirection by a spring drum. This spring drum (see Figs. 6, 7 and 10) ismounted in a U- shaped bracket 78 which is formed of pressed steel andis secured to the under face of the carriage bed 48. A hub'79 is clampedand held against movement between the side members of the bracket 78 bymeans of a bolt 80 extending therethrough. This hub comprises anenlarged central portion and reduced end portions. The body of the drumis formed of a ring 81 and heads or disks 82. The heads or disks 82 havea snug. clamping fit with the ring 81 and are forced under pressure intothe ring. The central openings of the disks loosely and rotatahlv fitthe reduced end portions of the hub 79 and a coiled spring 83 within thedrum is connected at its ends to the enlarged central portion of the hub79 and to the ring 81. The upper end of the drum projects through anopening in the carriage bed 48 and a steel strap 84 coiled about thedrum and connected thereto at one end, extends over the carriage bed andis connected at its opposite end by a hook 85 (see Fig. 7) to therighthand end of the carriage.

The escapement which controls the letterspace movement of the carriageis mounted upon the shifting frame to move vertically therewith. Forthis purpose a U-shaped bracket 86 is fixed to the under face of thecarriage bed48 and at the rear central portion thereof (see .Figs. 1, 5,6 and 7). This bracket is provided with down-turned ears and also withan upwardly and rearwardly projecting portion 87 having at its upperend, an inwardly offset stop lug 88. A U- shaped frame 89 is connectedwith the bracket 86 by a horizontal pivot pin 90 and is provided withforwardly extending arms 91 which support the pivoted dpg rocker. AU-shaped arm 92 (see Fig. 1) 1s fixed to the frame 89 and extendsupwardly therefrom through an opening in the bracket 86. Aspring 93coiled about the pin 90 engages one of the arms 91 and holds the bracketand parts carried thereby in normal position.

- In this position the arm 92 engages an adjustable screw 94 on theupright 87.

The dog rocker 95, like the other parts of the escapement, is preferablyformed of sheet metal and is T-shape in outline, as most clearly shownin Fig. 7. The horizontal arms 96 at the upper end of the dog rocker areprovided at their ends with pivots 97 which engage suitable bearingopenings in the forward ends of the arms 91. A pair of screws 98 and 99are threaded through the, upper portion of the dog rocker, one above theother, as most clearly shown in Fig. 7. These screws are provided withshouldered forward ends and with threaded rear ends, the latter servingto secure a fixed dog 100 to the dog rocker. A spacing dog 101 ispivotally mounted upon the shouldered portion of the upper screw 98,with its lower end or tail arranged between the upper ends of a pair ofspring arms 102 and 103. .The lower ends of the spring arms 102 and 103are integrally connected and are fastened to the lower end of the dogrocker by a screw 104. The springs 102 and I 103 are adapted to bearupon the lower end or tail of the spacing dog 101 and also upon theshouldered front end of the screw 99.

The upper portion of the dog rocker and the dogs thereon extend throughan opening in the carriage guide 48 into engagement with a rack bar 105fixed to the underside of the horizontal carriage plate 75. The spacingdog 101 normally engages the rack I teeth and the tension of the springdrum holds the spacing dog in the position shown in Fig. 7, with the dogagainst a stop lug 106 on the upper end of the dog rocker and with thespring 102 under tension. When the lower end of the dog rocker isshifted rearwardly, as shown in Fig. 3, its upper portion is swungforwardly to move the spacin dog 101 out of engagement with the rack andthe fixed dog 100 into engagement therewith. The spring 102 then swingsthe dog 101 about its pivot so that, when the dog rocker swings back, itwill reenga e the next tooth of the rack 105 and permit the letter-spacemovement of the carriage. The shift of ,the spacing dog effected by thespring finger 102 is limited by the spring finger 103', but when thecarriage is drawn back toward the right, the upper end of the spacingdog may be swung about its pivot toward the right against the tension ofthe spring 103. The spacing dog is also provided with a lug 107, which,while it permits the movements described of the spacing dog, cooperateswith the lug 106 to prevent the displacement of the dog.

The lower end of the dog rocker is connected to an actuating shifter 108by a screw 109. The latter extends through a vertically slotted part 110of the shifter and through a forwardly turned lug on the lower end ofthe dog rocker. Also the rear portion of the shifter 108 is connected bya swinging link 111 to a lug 112 on the lower rear cross bar 12. Theupper front portion of the shifter is connected by a pivot pin 113 to acoupling member 14, and the latter is adjustably connected by screws 115to the central portion of a universal bar 116. The latter (see Figs. 1,3. 5 and 13) is of segmental form and extends above the type bar segmentin position to be struck by the type bars when the latter are actuated,as shown in Fig. 3. At points adjacent its ends the universal bar 116 isconnected to the upper forwardly projecting ends of a pair of arms 117.Preferably the arms 117 and the universal bar 116 are formed of a singlepiece of pressed sheet steel. At their lower ends the arms 117 are fixedto a rock shaft 118, the reduced ends of which are journaled in suitablebearings 119, the latter being suitably mounted in the side plates 10. IA spring 120 (see Figs. 5 and 13) which is coiled about the rock shaft118 engages one of the arms 117 and holds the universal bar and theactuating shifter 108 in normal position. In this position, a stop screw121 adjustably threaded through a lug on the shifter 108 engages therear face of the type bar support 116.

The universal bar and the shifter 108 are thus actuated by the keylevers and type bars to actuate the dog rocker and effect thestep-by-step movement of the carriage. The pin and slot connectionbetween the dog rocker and actuating shifter 108, permit the verticalshift of the dog rocker with the carriage supporting frame. As is clearfrom Figs. 1 to 3, the link 111 serves to maintain space bar islL-shaped is section and is conthe slotted portion 110 substantiallyvertical as the universal bar is rocked rearwardly so that the throwimparted to the dog rocker s substantially uniform in the difl'erentvertical ositions of the carria e shifting frame.

T e space bar 122 (see ig. 1) is also arranged to operate the dogrocker. This nected at its ends to a pair of levers 123. These leversextend rearwardly beneath the pivot rods 40 and are hung on the frontpivot rod. The rear ends of the levers 123 are connected by an integralcross bar 124 which extends beneath the forward end of. an arm 125, therear end of which is fixed to the rock shaft 118. The space bar is heldin normal position with a stop lug 126 thereon extending beneath theflange 14 of the front cross bar 11. When the space bar is depressed,the bar 124 at the rear end of the lever arms 123 lifts the forward endof the arm 125 and rocks the shaft 118 and there by actuates theescapement. The arm 125 is bent upwardly as shown, so that it will notinterfere with the vertical movement of the bar 57.

In the ordinary operation of the escapement, the dogrocker oscillates inthe frame 89 and the latter is held stationary with the upwardlyprojecting arm 92 in engagement with the stop screw 94. I By shiftingthe upper end' of the arm 92 forwardly the frame 89 may be rocked on thepivot pin 90 to depress the arms 91 and the dog rocker carried thereby,and thus move theescapement dogs out of engagement with the carriagerack and permitthe free lateral movement of the carriage. For thispurpose the U-shaped arm 92 is provided with an upwardly projectingportion 127 which extends behind and engages the rear face of a vertically disposed transverse rock bar 128. This rock bar is provided at itsends with rearwardly turned lugs 129 which are fixed to a pivot rod 130that extends between and is pivotally mounted in the end pieces 77 ofthe carriage. By rocking the-pivot rod 130,

the transverse plate or bar 128 is oscillated and the upper end of thearm 92 is shifted forwardly to release the escapement. It should benoted that the engaging portions of the arm127 and plate or bar 128extend above and below the pivot rod 130 so that the engagement of theseparts tends to hold the rock bar 128 and pivot rod 130 in centralposition, and, by oscillating these parts in either direction fromnormal central position, the end of the arm 92 may be moved in forwarddirection to release the escapement. For shifting the pivot rod or rockshaft in opposite directions, a finger-piece 131 is fixed to therighthand end thereof adjacent and preferably outside of the righthandend plate 77 of the carriage. The rock shaft 130 is pivoted inrearwardly project- Y eeann 136 are adjustably mounted on this stopbarand are arranged to cotiperate with the fixed stop lug 88 to limit themovements of the carriage in opposite direction. These margin stops areformed of sheet metal bent to extend about the stoprod, as most clearlyshown in Fig. 1, and adjustably held in position on the stop rod byscrews 137 or the like. The lefthand margin stop is provided with adepending lug 138. The righthand margin stop 135 is provided with a lug139 and a swinging bell trip 140 which is pivoted at its upper end tothe rear portion of the margin stop. As the carriage moves inletter-space direction, the part 140 will first engage a lug 150 on theupper end of a bell hammer 151. The latter is pivoted at its upper endto an arm 152 which is socured to and projects rearwardly from thecarriage bed 48. A depending arm 153 formed in piece with the arm 152carries a bell 154. After the trip 140 passes the lug 150 the bellhammer is released to sound the bell and notify the operator that thecarriage is approaching the end of its movement. At the end of theletter-space move ment, the member 140 will engage the fixed stop lug 88and will be moved against the lug 139 of the margin stop to positivelyarrest the carriage.

One or more tabulator stops 155 are also mounted upon the stopsupporting rod 134. The tabulator stop is similar in its'con- .structionto the margin stops, exce t that it is not provided with a depending lugbut has at its upper portion a rearwardly projecting lug 156. Normallythis lug (see Fig. 1) will clear the stop lug 88, but if thefinger-piece 131 at the righthand end of the shaft 130 is movedrearwardly, the .bar 134 and stops thereon will be lowered and the lug156 of the tabulator stop will be inllne with the fixed stop 88. At thesame time, bar or plate 128 will be shifted to effect the release andthe carriage can then be moved until the tabulator stop engages thefixed stop. By shifting the upper end of the tinbar or more seats 157formed in the upper edge of the stop bar 134 at letter-space dlstances aart.

A U-shaped bracket 158 isfixed to the front up-turned flange 74 of thecarriage bed (see Figs. 1 and 6), and a U-shaped rocklng member 159 isplvotally connected to the bracket 158 by a horizontal plvot pm 160. Themember 159 is provided with an upwardly projectingbifurcated type barguide having forwardly projecting rongs 161 at its upper ends. It isalso provided with a downwardly and rearwardly projecting arm 162 whichis arranged to be engaged by an arm 163 that projects forwardly from theupper portion of the dog rocker. The parts are so arranged that, as therocker is OSClllated, the upper portion of the rocking type guide willbe shifted from its normal positlon shown in Fig. 1 to a positionadjacent the printing oint as shown in ,Flg. 3. The rocking mem er 159also serves as a ribbon shifter. For this purpose, a thin metal plate164 is provided with integral retaining-clips 165 bent about the uprightportions of the type bar guide and with vertical slots 166 through whichthe ribbon is passed. The ribbon holder, like the type bar guide, isbifurcated to provide a space through which the type are projected andacross which the ribbon extends. Preferably, as shown, the ribbon holdercan be adjusted vertically upon the rocking member to bring differentportions of the ribbon (for example, diflerent colored bands) into thepath of the type. The lower horizontal por tion of the rocking memberand shoulders 167 on the upright portion thereof, limit the shift of theribbon holder.

The ribbon is wound upon a pair of spools 168 (see Fig. 15) which aremounted on the upper ends of two short shafts 169. These shafts arejournaled in the forward ends of the flange 51 of the carriage shaftframe and in the over-hanging portions 52 thereof. Preferably, as shown,the ribbon spools are arranged within cylindrical cases 170 fixed toparts 52 and provided with slots 171 through which the ribbon extends.The ribbon passes horizontally from one spool to the other and throughthe slots 166 of the oscillating ribbon-holder and shifter.

The spool shafts are provided on their lower ends with gears 172 (seeFigs. 1 and 6) which mesh with intermediate idlers 173, ,the latterbeing mounted upon studs 173 that depend from the horizontal flange 51.The gears 173 are adapted to be alternately engaged by a pair of worms174 on the opposite ends of a shaft 175. The latter is journaled indown-turned lugs 176 on the ends of 'a horizontal supporting bar 177.This bar is connected by a central pivot 178 to the under side of thecarriage bed or track 48, and is adapted to be oscillated to engage oneof the worms 174 with theadjacent gear 173 and disengage the other wormfrom its gear. The worms 174 are preferably formed by winding a lengthof wire around the ends of the shaft 175 and brazing or otherwisesuitably securing the same thereto.

A projecting finger-piece 179 extends from the holder 177 Thisfingeriece extends through the opening of a -shaped bracket 180 on theshifting frame (see Fig. 1.), the upper portion of the latter having adepending lug 181 located midway between the ends of the bracket openingand serving to hold the finger-piece 179 at one end or the other of theopening in the bracket 180.

The central portion of the shaft 175 is! provided with a ratchet 182which is arranged to be engaged by a pushing pawl 183 and a pulling pawl184. These pawls arc pivoted upon a supporting lug or bracket 185 fixedto the dog rocker and are connected by a spring 186 which holds the dogsyieldingly into engagement with the ratchet 182. The vibration of thedog rocker thus rotates the shaft 175 in one direction,'and by shiftingthe shaft support 177 as described, the worms 174 can be alternatelybrought into engagement withthe gears 173 to feed the ribbon in oppositedirections.

It should be noted that the ribbon feeding mechanism and the ribbonvibrator are both operated from the escapement dog rocker, and, like thelatter, are mounted upon the carriage shift frame to move verticallytherewith.

The carriage platen 187 comprises the usual rubber-covered wooden rollermounted upon a shaft 188, which is journaled in the end plates 77 of thecarriage and provided wlth turning buttons 189. Sheet metal cap pieces190 having inturned flanges 191 fit over the reduced ends of the platenand are provided with inturned integral prongs 192 for securing the sameto the platen. They are also provided with hub portions 193, throughwhich fastening pins 4 extend to fix the platen to the shaft 188. Theflange of the cap piece at the lefthand end of the machine is providedwith fine teeth and feed pawl 194 (see Fig. 16) cooperates therewith toeffect alined space movements of the platen. This feed pawl is pivotallymounted upon the upper end of meteor jects inwardly from a part of theadjacent end plate 77 This spring holds the arm 195 in the normalposition shown in Fig. 16v against a Stop 200. By pressing finger-piece196 rearwardly, the dog 194 grips the teeth on the adjacent cap piece ofthe platen and rotates it in line-space direction. An adjustable screw201 threaded through the flange on ledge 199 limits this forwardmovement of the line-spacing dog. The stop 200 is U-shaped in form (seeFig. 15) and is mounted upon a rod 202. It may be adjusted lengthwise onthe rod and so moved into and out of line with the arm 195 to therebyvariably limit the forward or idle movement of the arm 195 tocorrespondingly vary the spaces between the lines.

The rod 202 extends between and is fixed to upwardly and forwardlyprojecting ears 203 on the end plates 77. It is preferably square insection and the portions-of the stop 201 are provided with similarsquare openings. This rod also carries adjustable sleeves 205 havingdepending portions 206 provided with paper-guide fingers 207. 1nclinedpaper-table 208 is provided with rearwardly projecting lugs 209pivo'tally engaging the shaft 180. The table is'provided with a curvedlower portion which extends forwardly beneath the platen and carries alongitudinal feed roller 210 which projects through a slot in theforward edge of the paper-table or guide 208 into engagement with theplaten. A pair of spring fingers 211 (see Fig. 8) are fixed to the underside of the carriage plate and are provided with bent ends which projectupwardly through opening in the plate 75 into engagement with thepaper-guide plate 208. These fingers serve to yieldingly hold thepaper-guide plate in position with the feed roller 210 and the forwardedge of the paper-guide in engagementwith the platen. A paper-guide 212also projects up from the bracket 158. This is formed of spring metaland is yieldingly held in position with its upper edge closely adjacentthe surface of the platen and in line with the printingpoint. theportion of the'guide opposite the printing point being slotted, ofcourse, to permit the passage of the type. This guide thus acts as agage for positioning the paper on the platen and in bringing any desiredportion thereof to the printing oint.

A rack and a cooperating 0g are provided for spacing the carriage inbackward direction. Preferably the back-spacing rack 213 (see Fig. 8) ismounted to slide longitudinally upon the upper face of the carriagesupport or guide 48. A pair of screws 21 extend through slots 215 in therack and hold the latter in place while permitting a longitudinalmovement of the rack slightly greater than one letter space. The rackshown is in the form of an angle bar, the

rack teeth being formed on the vertical flange thereof and thehorizontal flange resting upon the upper face of the plate48; A spring216 is connected to a projection on the rack through the fixed pin 178and holds the rack in normal position with the right hand ends of theslots 215 engaging "the screws 214. An arm 2 17 is arranged beneath theleft hand portion of the carriage plate 7 5 and has an up-turn'ed end218 which extends upwardly adjacent the lefthand end plate 77. The part218 has an ofiset perforated lug 219 (see Figs. 8 and 16) through whichthe platen shaft loosely extends. This arm 218 is normally inclined awayfrom theend plate and the parts 217 and 218 are adapted to hate arocking movement on the corner of the carriage between the plate 75thereon and the lefthand end plate 77, which rocking movement can beefiected by pressing the upper end of the arm or finger-piece 218inwardly or toward the right. A pair of screws 220 extend through the am218 into the plate 75 and a spring finger 221 is v I fixed'to the arm atone end and its free end engages the head of one of the screws 220 sothat the arm 217 is held in normal position snugly against the plate 7 5and spaced apart from the heads of the screws 220. The inner end of thearm 217 is provided with a dog 222 which is in line with the teeth ofthe back space rack 213. This dog normally clears the rack teeth 13, butby pressing the upper end-of the finger-piece 218 toward the right, thedo is depressed into engagement with the Tack spacing rack and thecarriage andrack are moved back or toward the right until the lefthandvof the slides 215 engage the pins 214:. During this movement the spacingdog 101 of the escapement passes over one of the teeth of the spacingrack 105,

so that when the back-spacing dog is released the carriage is heldagainst return movement. When the back spacing dog is up released, thespring 216 will move the rack 213 back to the normal position shown inFig. 8, so that the back-spacing mechanism is ready for the succeedingoperation. In this way, the carriage may be moved a letter-space at atime in backward direction or toward the righthand side of the machine.

It should be noted that the parts can be inexpensively formed bysuitable dies from sheet steel. It is obvious that changes may be madefrom the details set forth without departure from the essentials of theinvention, and that parts may be taken without its adoption in entirety.

* I claim as my invenion:

1. In a typewriting machine, the combination with a mainframe and a typebar action mounted therein, of a vertically mov able shift frame, acarriage bed mounted on said shift frame, a platen carriage on 35 aratchet centrally mounted said bed, ribbon? carrying and feedingmechanism mounted on said shift frame, a ribbon vibrator mounted on saidshift frame, an escapement including a vertically disposed dog rockerhaving escapement dogs thereon and pivotally mounted on said shiftframe, key-controlled means for vertically moving said shift frame,means controlled by the type bar action for oscillating said dog rockerin the different positions of said shift frame, and devices mountedon'said pivoted dog rocker for operating said ribbon vibrator and saidribbon feed mechanism, substantially as described.

In a typewriting machine, the combination with a main frame and anupwardly and rearwardly striking type bar action mounted thereon, of avertically movable, case-shift frame, a carriage bed mounted thereon, aplaten carriage on said bed, ribbon' spools mounted on said shift framein front of said carriage bed, feed mechanism for said spools mounted onsaid shift frame below said carriage bed, a ribbon vibrator pivotallymounted on said shift frame, an escapement including a dog rockerpivotally molmted onsaid shift frame and having escapement dogs thereon,key controlled means for vertically moving said shift frame, a universalbar mounted on. said main frame and arranged to oscillate said pivoteddog rocker in the different positions of said shift frame and separatedevices mounted on said pivoted dog rocker for respectively p in saidribbon vibra:

tor and said ribbon feed mechanism, substantially as described. v

In a front strike typewriter, the combination of a vertically movableshift frame,

a carriage bed thereon, a platen carriage on said shift frame, verticalribbon-spool shafts mounted on said shift frame in front of the endportions of said carriage bed, a horizontal drive shaft mounted on saidshift frame below said carriage bed, separate sets of gears forconnecting the ends of said drive shaft and the lower ends of saidribbon-spool shafts, said drive shaft being movably mounted on saidshifting frame to alternately engage said sets of gears and means foractuating said shaft in the different positions of said shift frame,substantially as described.

4. In a front-strike typewriter, the combination with a verticallyshifting frame, a

platen carriage mounted thereon, and verti-' cally disposed spool shaftsat the front end portions of said frame, of gears connected to the lowerends of said shaft, a horizontal drive shaft having gears at its endsfor driving said spool-shaft gears, a horizontal support for said shaftcentrally pivoted to said shifting frame and movable thereon to ;connectsaid drive shaft to said spool shafts, on said shaft,

tal

nation with a carriage,

a rocker on said shifting frame, pawls on said rocker for operating saidratchet and means for actuating said rocker in the different positionsof said shifting frame, substantially as described.

5. In a front-strike typewriter, the combination with a main frame, of avertically shifting frame comprising uprights and a carriage-bed fixedthereto, ribbon spools mounted on said uprights in front of the endortions of said carriage bed, a horizonve shaft, sets of gears forconnecting said drive shaft and said spool shafts, a swinging supportfor said shaft centrally pivoted on the under side of said carriage bedfor alternately engaging said sets of gears, said support having aprojecting finger piece at one end, and means for.actuatmg said shaft inthe different positions of said frame, substantially as described.

6. In a front-strike typewriter, the combination with a verticallyshifting frame and a platen carriage mounted thereon, an escapement forsaid platen carriage mounted on said shiftin frame and including avertically disposed, pivoted dog rocker, spool shafts at the ends ofsaid shlfting frame, a horizontal drive shaft, sets of gears connectingsaid drive shaft and said spool shafts, a support for said shaftcentrally pivoted on sald frame and arranged to alternately engage saidsets of gears, a ratchet centrally mounted on said shaft, a pawl on saiddog rocker for operatin said ratchet, and means for oscillating saicfdog rocker in the different positions of said frame, substantially asdescribed.

7. In a front strike vibrator, the combia platen thereon, a carriage bedand upwardly and rearwardly striking type bars, of a combined type barguide and ribbon vibrator pivotally mounted upon the front of saidcarriage bed below the prmtlng point and having an extension pro ect1ngdownwardly and rearwardly from its pivot and a letter-space escapement,including a dog rocker, pivoted on said carriage bed in rear of saidvibrator and having a forwardly extending arm arranged to engage saidextension and oscillate sald combined type bar guide and ribbonvibrator, substantially as described.

8, In a front-strike typewriter, the combinatlon with the platen, acarriage therefor, and upwardly and rearwardly striking typebars, of avertically shiftable carriage bed, a combined type-bar guide and ribbonvibrator pivotally mounted upon the front of said carriage bed, anescapement mounted on said carriage bed below the printing LQMEWOI thediflerent vertical positions of said carriage bed, substantially asdescribed.

9. In a front-strike typewriter, the combination with theplaten,'carriage and carriage bed, of upwardly and rearwardly strikingtype bars, a combined type-bar guide and ribbon vibrator pivotallymounted on said carriage bed and extending upwardly and forwardly fromits pivot, a ribbon holder longitudinally adjustable on said combinedguide and vibrator, and means for oscillating the latter, substantiallyas described.

10. In a front-strike typewriter, the combination with a platen andupwardly and rearwardly striking type-bars, of oppositely disposedribbon spools, a ribbon vibrator,

a drive shaft for alternately actuating said spools, an escapementincluding a pivoted dog rocker, and means on said 'do rocker foroperating said shaft and said ri bon vibrator, substantially asdescribed.

111. In a front strike vibrator, the combination with a platen, carriageand carriage bed, of upwardly and rearwardly striking type bars, aslotted type bar idc pivotally mounted on the front of saig oarriage bedbelow the printing point and extending uphaving ribbon engaging slots inline with said guide prongs and means for oscillatin said guide,substantially as described.

12. In a front strike vibrator, the combination with a platen carriageand a vertically shifting carriage bed of oppositely" disposed ribbonspools mounted in front of the ends of said'carriage bed and verticallyshiftable therewith, a ribbon vibrator piv-- otally mounted on the frontof said oarriage bed below the printing point," a drive shaft foralternately act-uatin said spools mounted on the under side an adjacentthe front of said carriage bed, a dog rocker pivotally mounted on saidcarriage bed in rear of said shaft and said vibrator, and devicesmounted on said dog rocker for respectively operating said shaft andsaid vibrator, substantially as described.

HUBJER'I K. HENRY.

Witnesses:

J. G. ANDERSON, A. R. CROSMAN.

did

